Harry Potter: 10 Most Powerful Slytherin Students

10. Antonin Dolohov

It's safe to say that this character feels like an afterthought, seeing as the movies treated him like a mere henchman. Still, despite that, he's not the kind of wizard you'd want to run into in a dark alley. If you were unlucky enough to do so (and didn't so happen to be covered in plot armour), you'd certainly struggle to leave that situation alive.

Antonin Dolohov was one of Voldemort's most loyal Death Eaters. He played a significant role in the first wizarding wars, torturing and killing plenty of muggles and wizards alike. These crimes led to him spending most of his life in Azkaban, save for two escapes. The second of which led to him getting the chance to attack Harry, Hermione and Ron in the Luchino Caffe.

Ultimately, this devilish wizard was responsible for killing one of the series' most loveable characters, that being Remus Lupin. His ability to kill and maim heroes shows that he's certainly one of Slytherin's strongest graduates.

Imagine the chaos that would have ensued had he never been sent to Azkaban. It doesn't bear thinking about.